Pulling pitman arm

Ok. Went to pull the pitman arm off of my truck so I can replace it with the new one from the lift kit. I broke the puller head off and now I can't get the puller off. Yall have any ideas on how to get that off and then how to get the pitman arm itself off? Truck has to be working no later than 10am monday morning. Thanks for the help yall.

'Nother question. I held the new pitman arm up to the old one and they look identical. Any reason I couldn't use the old on? They are the same length, thickness, same drop, same angle, everything. Thanks for the help yall. We got the puller off and come to find out, the threads were stripped on it and that was why it was so hard to turn. Now I just got to convince o'reilly's of this.